bug(mat-navigation-list): Navigation List active items should have on-secondary-container color

### Description

Currently, Navigation List active item has a secondary-container background, but does not use on-secondary-container color, which we find erroneous

### Reproduction

https://material.angular.dev/components/list/examples#list-navigation

### Expected Behavior

Navigation List active items should have color of on-secondary-container, since they have a background color of secondary-container

### Actual Behavior

Navigation List items do not update their color when set to active and remain on-surface even though their background is no longer surface

### Environment

- Angular: v21
- CDK/Material: v21
- Browser(s): any
- Operating System (e.g. Windows, macOS, Ubuntu): any

Abre el ejemplo Navigation List en material.angular.dev/components/list/examples#list-navigation e inspecciona cómo se aplica el estilo al elemento activo. Se considera terminado cuando un elemento activo conserva su fondo secondary-container y usa el color on-secondary-container en lugar de on-surface; verifica el comportamiento del ejemplo después del cambio.

Escrito por el modelo de indexación a partir del texto del issue.